JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td>Cell 1</td>
    </tr>
    <tr>
        <td>Cell 2</td>
    </tr>
    <tr>
        <td>Cell 3</td>
    </tr>
    <tr>
        <td>Cell 4</td>
    </tr>
</table>

JavaScript

var table = document.querySelector('table');

var rows = table.getElementsByTagName("tr");
while (rows.length > 1) {
    rows[1].parentNode.removeChild(rows[1]);
}